﻿#region License
/***********************************************
 *  WCFReactiveX v.1
 *  Written by James Levingston
 *  
 *  To get latest version or to see latest info:
 *  http://wcfreactivex.codeplex.com/
 *  
 *  The MIT License (MIT)
 *  http://en.wikipedia.org/wiki/MIT_License
 *  Copyright (C) <2011> by <James Levingston>
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy
 *  of this software and associated documentation files (the "Software"), to deal
 *  in the Software without restriction, including without limitation the rights
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the Software is
 *  furnished to do so, subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in
 *  all copies or substantial portions of the Software.

 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *  THE SOFTWARE.
 ***/
#endregion

using System;

namespace WCFReactiveX
{
    public class Reporter<TContext, TToken, TResult, TMessage> : Reporter<TMessage>
    {
        public IProviderResult<TResult, TMessage> Result { get; private set; }
        public override void OnNext(IProviderResult<TMessage> value)
        {
            if (value != null)
            {
                this.Result = (IProviderResult<TResult, TMessage>)value;
                if (this.OnResult != null)
                    this.OnResult(this.Result);
            }
        }
        public event Action<IProviderResult<TResult,TMessage>> OnResult;
    }
    public class Reporter<TContext, TToken, TMessage> : Reporter<TMessage>
    {
        public IProviderResult<TMessage> Result { get; private set; }
        public override void OnNext(IProviderResult<TMessage> value) 
        {
            if (value != null)
            {
                this.Result = value;
                if (this.OnResult != null)
                    this.OnResult(value);
            }
        }
        public event Action<IProviderResult<TMessage>> OnResult;
    }
    public class Reporter<TMessage> : IReporter<TMessage>,
        IObserver<IProviderResult<TMessage>>, IProviderEventListener, IProviderTransactionReporter
    {
        private IDisposable unsubscriber;

        public Guid CurrentTransactionId { get; private set; }
        public virtual event Action<IProviderTransaction> OnRequest;
        public virtual event Action<IProviderTransaction> OnResponse;
        
        public virtual void Request(string details)
        {
            if (this.OnRequest != null)
                this.OnRequest(this.GetTransaction(details, this.CurrentTransactionId = Guid.NewGuid()));
        }
        public virtual void Response(string details)
        {
            if (this.OnResponse != null)
                this.OnResponse(this.GetTransaction(details, this.CurrentTransactionId));
        }
        public virtual ProviderTransaction GetTransaction(string details, Guid tranId)
        {
            return new ProviderTransaction
            {
                Details = details,
                TransactionDt = DateTime.Now,
                TransactionId = tranId.ToString()
            };
        }
        public virtual void Subscribe(IObservable<IProviderResult<TMessage>> provider)
        {
            if (provider != null)
                unsubscriber = provider.Subscribe(this);
        }
        public virtual void Unsubscribe()
        {
            if (unsubscriber != null)
                unsubscriber.Dispose();
        }
        public virtual void OnCompleted()
        {
            this.Unsubscribe();
        }
        public virtual void OnError(Exception error)
        {
            this.Unsubscribe();
            throw error;
        }
        public virtual void OnNext(IProviderResult<TMessage> value)
        {
            throw new NotImplementedException();
        }
    }
}
